12
A.1 Power Supply
MCP2120/MCP2150
USER鈥橲 GUIDE
Appendix A. Hardware Detail
The MCP2120/MCP2150 Developer鈥檚 Board hardware is intended to illustrate
the ease of use of Microchip鈥檚 infrared data communication solutions. The
Developer鈥檚 Board features the following hardware elements:
There are three ways to supply power to the MCP2120/MCP2150
Developer鈥檚 Board:
鈥?A 9V battery can be plugged into BT1.
鈥?A 9V, 750 mA unregulated AC or DC supply can be plugged into J5.
鈥?A +5V, 750 mA regulated DC supply can be connected to the two pins
provided, labled +5V and GND. A pair of 18鈥?(45 cm) cables are pro-
vided to allow one board to power another.
A.2 Power Indicator
One green LED indicates whether there is power applied to the MCP2120 and
MCP2150 Developer Boards (LED lit) or not (LED off).
A.3 RS-232 Serial Port
A.3.1
MCP2120 Developer鈥檚 Board
A MAX232 compatible level shifting IC has been provided with all necessary
hardware to support connection of an RS-232 host through the DB-9
connector. The port can be connected to a PC using a straight through cable.
Refer to the MCP2120 Data Sheet for more information.
A.3.2
MCP2150 Developer鈥檚 Board
A MAX3238E compatible level shifting IC has been provided with all
necessary hardware to support connection of a RS-232 host through the
DB-9 connector. The port can be connected to a PC using a straight through
cable. Refer to the MCP2120 Data Sheet (DS21618) for more information.
錚?/div>
2001 Microchip Technology Inc.
DS51246A-page 45
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